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| author | Stefan Hajnoczi | 2013-04-15 17:17:32 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2013-04-22 10:27:58 +0200 |
| commit | 16b3c5cd9f27678bc9d6707664640653b47533b9 (patch) | |
| tree | f651cee5296cf7f98e270b87854dda286b40c43d /include | |
| parent | qcow2: allow sub-cluster compressed write to last cluster (diff) | |
| download | qemu-16b3c5cd9f27678bc9d6707664640653b47533b9.tar.gz qemu-16b3c5cd9f27678bc9d6707664640653b47533b9.tar.xz qemu-16b3c5cd9f27678bc9d6707664640653b47533b9.zip | |
qcow: allow sub-cluster compressed write to last cluster
Compression in qcow requires image length to be a multiple of the
cluster size. Lift this requirement by zero-padding the final cluster
when necessary. The virtual disk size is still not cluster-aligned, so
the guest cannot access the zero sectors.
Note that this is almost identical to the qcow2 version of this code.
qcow2's compression code is drawn from qcow.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions